Ophthalmic table



April 29, 1930. G. A. GALLOWITZ OPHTHALMIC TABLE Filed June 10, 1926 Z fizanyeutoi Patented Apr. 29, 1 930 PATENT OFFICE GUSTAVE A. G-ALLOWITZ, OF NEW" YORK;

Y., ASSIGNOR TO THE KNY-SCHEERER CORPORATION OF AMERICA, OF YORK, N. Y., A CORPORATION OF NEW YORK OPHTHALMIC TABLE Application filed June 10,

My invention relates to an improvement in an ophthalmic table and the novelty resides in the adaptation and arrangement of parts, as will be more fully hereinafter pointed out.

Certain positions of the patient are very vital to the successful operation in certain ophthalmic operations and one of these is well known as the Trendelenburg position. These positions frequently must be obtained quickly during the operation and changed as may be desired Without moving the patient.

My table is adapted to effect such positions and changes quickly and readily and the construction is simple and efficient for the purposes required.

Referring to the drawings Figure 1 is a perspective of my complete table showing it in a position for which my table is peculiarly adapted. Figure 2 is a cross section of one of the gear boxes on the subframe.

In the drawing 1 is a base frame having legs 2 on which are mounted casters 3 of usual construction, one pair of which have brake members 4 also of well known construction.

i One end of the base frame has curved frame usual construction and a pair of rack bars 12 pivoted on their upper ends at 13 in the subframe 9 pass through said gear boxes 11. On one end of the shaft 10 is a crank 14 having a handle 15 the turning of which effects the turning of the shaft 10 whereby the gears in the gear boxes 11 are rotated so as to raise or lower the rack bars 12 at either side thereby tilting the subframe 9 on the pivots 8 and this tilting position is possible as the rack bars 12 are pivoted at 13 so that they turn readily -o-n said pivots and the gear boxes 11 are also pivoted on the shaft 10 so that they also turn to maintain the alignment of the rack bars 12 and the gear boxes 11.

A second series of gear boxes 16 mounted 1926. Serial Ho. 11 1,5365.

on the subframe 9 and a cross driving shaft 17 having a crank and handle 16 passes through two of said gear boxes 16 at the outer or lifting end of said subframe 9. Longitudinal driving shafts 19 are mounted so as to pass through both pairs of gear boxes 16 on either side of the subframe 9 whereby they transfer the motion from the gear boxes at the outer ends of the subframe 9 to the gear boxes on the inner or pivoted end of subframe 9. Four rack bars 20 of usual construction rigidly secured at their upper ends to a top member 21 pass through the four gear boxes 16 and are controlled in the usual manner heingraised and lowered by means of the crank and handle 18 through shaft 17 and shafts 19 as may be desired thereby raising and lowering the top member 21. A foot member 22 of usual construction is pivoted at 23 to the top member 21. A head portion 24 is also pivoted to the top member 21 at 25. A subhead portion 26 is pivoted at 27 to the outer end of the head portion 24 and a head rest or head clamping member 28 of well known construction is mounted on a rod 29 adjustably sccured to the underside of the head portion 24. A lack adjustment means 30 of usual con struction is mounted on the underside of the foot portion 22 and the adjacent end of the top member 21 and another rack adjustment means 30 is also mounted under the member 26 and the adjacent end of the member 24-.

The physician or other person using this ophthalmic table may push it to the position desired in the room where it is to be used and the brakes 1 may then be applied so as to lock the table securely in this position against accidental movement. The top member 21 may then be adjusted to the desired height by the turning of the crank and handle 18 which motion is transmitted through the shaft 17, outer gear boxes 16. shafts 19, inner gear boxes 16to all four of the rack bars 20 whereby the table top member 21 is placed in the desired position and will remain there until further adjustment. If the Trendelenburg position or some other similar position is required the crank 14 and handle 15 may be turned whereby the shaft 10 will transmit the motion through the gears 11 to the rack bars 7 12 whereby the outer ends of the subframe 9 will be lifted to the position required pivoting on the pivots 8 and the top member 21 and its connecting rods will be moved according ly therewith. The head portion 24, subhead portion 26 and clamping'mean s 28- may also be adjusted as required and the foot portion 22 and any of these positions may be changed 7 during the operation whereby the patient may be thrown into the exact position required and this can all be done without removing the patient from the-operation table so that such changes can be quickly and easily effected.

It is obvious that many changes may be made in the exact construction of my device without varying from the spirit and intent of the invention. a

, I claim: c

1. In an ophthalmic table the combination of a base frame substantially cut away at one end, a subframe pivoted adjacent the center of the base frame, means for elevating the other end of said subframe, comprising a crank shaft in said base frame, gear boxes pivoted on said shaft, rack bars passing through said gear boxes and pivoted at their upper ends to said subframe, means on said subframe for raising and lowering a table 30 top uniformly, and a top mounted entirely on said raising and lowering means.

, 2. In an ophthalmic table the combination of a base frame, a subframe pivoted thereon, means for elevating the other end of said sub- 5 frame, a table top mounted on said subframe by means of uniform elevating means supported'entirely in and operating from said subframe.

3. In an ophthalmic table the combination 40, of a base frame, a subframe pivoted thereon at one end, means for elevating the other end of said subframe, a table top mounted on said subframe 1 by means of uniform elevating means supported in and operating from said subframe comprising a cross shaft, gears in gear boxes at either end of said cross shaft meshing with vertical racks supporting the top, a shaft carried by each gear box and gear boxes on the opposite end of each of said last mentioned shafts and a pair of vertical racks supporting the said top and oper'atively connected to said last mentioned shafts in said last mentioned gear boxes.

4. In an ophthalmic table the combination '55 of a base frame substantially cut away at one end,- a subframe pivoted adjacent the center of the base frame, means on said base frame for elevating the other end of said sub-frame, a table top mounted on said subframe and means contained entirely within said subframe for raising said table top in a plane always parallel to the plane of the subframe.

In testimony whereof I afiix my signature.

GUSTAVE A. GALLOWIT Z. 

